Mold for building-blocks.



M. O UTEDA. MOLD FOR BUILDING BLOCKS.

vAPPLIOATIOI FILED SEPT. 12, 1908.

Patented 0G11. 19, 1909.

2 SHEETS-SHEET l.

V M. OUTEDA. MOLD FOR BUILDING BLGKS.

APPLIUATION FILED SEPT. 12, 1908.

Patented Oct. 19,1909. 2 SHEETS-SHEET 2.

ya @i 4 pif/5" ff MANUEL OUTEDA, 0F HABANA, CUBA.

MOLD FOR BUILDING-BLOCKS.

Specification of Letters Patent.

Patented Oct. 19, 1909.

Application filed September 12, 1908. Serial No. 452,788.

To all whom it may concern:

Be it known that I, MANUEL OUTEDA, a citizen of the Republic of Cuba, residing at Habana, Cuba, have invented certain new and useful Improvements in Molds for Building-Blocks, of which the following is a specification.

This invention relates to molds for constructing hollow blocks of plastic material and the object thereof is to provide in a manner as hereinafter set forth a proper mold for forming blocks of I-shape transverse section; and which shallbe simple in its structure, rigid and at the same time comparatively inexpensive to manufacture.

In describing the invention in detail reference is had to the accompanying drawings wherein like characters denote corresponding parts throughout the several views, and in which:

Figure 1 is a side-elevation of a block constructed by a mold in accordance with this invention. Fig. 2 is a vertical transverse section of said block. Fig. 3 is a top plan view of a mold in accordance with this invention. Fig. 4 is a vertical longitudinal section of the mold on the plane of the line 4, 4, Fig. 3. Fig. 5 is a horizontal section of the mold on the plane of the line 5, 5, Fig. 4. Fig. 6 is a vertical transverse section of the mold on the plane of the line 6, 6, Fig. 3. Fig. 7 is an end view of the mold. Fig. 8 is a top plan view of the mold without the cores which form the side hollows of the block. Fig. 9 is a side elevation of the mold without said cores. Fig. 10 is a vertical transverse section of the mold, on line 10, 10, Fig. 8. Figs. 11 and 12 are top and bottom views, respectively, of one of the cores which form the side hollows of the block. Figs. 13 and 14 are a side elevation and an end view,respectively, of one of these cores. And Fig. 15 is a vertical transverse section of one of said cores, on line 15, 15, Fig. 11.

This mold has for its object the construction, from plastic material, of I-shaped blocks having the ends of the anges or bases closed by means of the vertical endportions or backs a, and having the projecting ledges 5 and the inwardly inclined shoulders c. However, it is understood that other shapes of blocks can be made with this mold.

Referring especially to Figs. 3 to 7, this mold comprises an outer frame 1 having side-openings, cores 2 received in said openings, and forming the hollows of the blocks, and the end-portions 3 which mold the ends of the blocks.

The frame 1 is composed of two sections 4 and 5, of which the section 5 isthe wider. Said sections are adapted to be connected one 'to the other by their end-walls whose edges 6 are cut according toa zigzag line. The sections are permanently connected by means of screw-bolts 7, one near each end of the frame and each of which is fastened to the Section5 by bending over the end of said screw-bolt, said bolt being provided with a nut 8 where its threaded portion extends beyond the section 4. In this way there is provided an adjustable connection between the sections 4 and 5, which can be regulated as desired.

At a short distance from the screw-bolts 7 the sections 4 and 5 are provided on their inner faces with grooves 9 extending vertically and adapted to receive the projecting edges 10 of vertical partition-walls 3, one at each end of the frame. Each wall 3 is provided at the inner face of its edge with a projection 11 of an angular section. These partition-walls serve to mold the backs a of the blocks, the projections 11 forming the end bottom recess of the same. Furthermore, as shown in Fig. 9, each of the sections 4 and 5 is provided with a substantially rectangular opening 12 narrowed at the ends 13 and of a length equal to the distance between the two partition-walls 3, less the width of the end backs of the blocks.

Each of the cores 2 consists of a block, preferably of wood, of rectangular shape, said block being provided with beveled corners 14,as shown in Figs. 11 and 12, and having its side and end faces also beveled, as shown in Figs. 13, 14 and 15, in this manner obtaining at the ends a reduced section in order to mold the ends of the top and bottom bases of the block. Each core 2 is constructed of such a size that it will be adapted to adjustably engage in each opening 12 of the frame 1 in the manner shown in Fig. 6, so that the outer face 15 thereof will be at a very short distance from the outer plane of opening 12, being retained in this position by means of two cleats 16 near both ends of the core and which project at both ends beyond the same. The ends of each cleat 16 are provided with grooves 17 and 18 to fit over the upper edges 19 and lower ones 20 of the corresponding opening 12 in the sidewall.

In order that the cores 2 may be locked in the frame 1, these cores have pivoted to the center of their outer faces a small strip or brace 21, with pointed ends 22. IVhen the cores 2 have been placed in position through the openings 12 these strips are turned into such a position that their ends 22 engage in grooves 23 formed at the inside face of edges 19 and 20, as shown in Fig. G.

Vith a view of facilitating the removal of the cores 2 from the openings of the frame, there is an angle-piece 24C fixed to each of the cores 2 at one of the ends thereof, and of such a height that it will be conveniently supported upon the outer face of the frame 1; and at the opposite end of each core is fixed a square-shaped plate 25 provided with an opening or perforation 26 through which the operator inserts his fingers in order to pull out the core, in which movement the latter is supported upon the outer face of the frame by means of plate 24, which acts in the nature of a pivot.

What I claim is:

1. In a mold for building blocks, the combination of side-Walls, rneans for separably connecting the side-Walls with each other,

end-walls engaged between said side-walls and provided with projecting edges received in inside grooves of the sidewalls, oppositely disposed solid side-cores extending through the side-walls and having beveled sides and ends, and a swinging brace pivoted on the outer face of each core for adjusting the ends thereof within opposite grooves in each sidewall. l

2. In a mold for building blocks, the combination of side-walls, means for separably connecting the side-walls with each other, end-walls engaged between said side-walls and provided with projecting edges received in inside grooves of the side-walls, oppositely disposed side-cores extending through the side-walls, a swinging brace pivoted on the outer face of each core and engaging at its ends wit-hin opposite grooves in each sidewall, an angle-piece on each core at one end for resting upon the outside of each sidewall, and a projecting perforated plate at the other end of each plate.

. In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.'

MANUEL OUTEDA. itnesses RICARDO MEAR, VICTOR NORMAND. 

